+++ /dev/null
-<?php
-//////////////////////////////////////////////////////////////
-/// phpThumb() by James Heinrich <info@silisoftware.com> //
-// available at http://phpthumb.sourceforge.net ///
-//////////////////////////////////////////////////////////////
-/// //
-// phpthumb.filters.php - image processing filter functions //
-// ///
-//////////////////////////////////////////////////////////////
-
-class phpthumb_filters {
-
- var $phpThumbObject = null;
-
- function phpthumb_filters() {
- return true;
- }
-
- function ApplyMask(&$gdimg_mask, &$gdimg_image) {
- if (phpthumb_functions::gd_version() < 2) {
- $this->DebugMessage('Skipping ApplyMask() because gd_version is "'.phpthumb_functions::gd_version().'"', __FILE__, __LINE__);
- return false;
- }
- if (phpthumb_functions::version_compare_replacement(phpversion(), '4.3.2', '>=')) {
-
- $this->DebugMessage('Using alpha ApplyMask() technique', __FILE__, __LINE__);
- if ($gdimg_mask_resized = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg_image), ImageSY($gdimg_image))) {
-
- ImageCopyResampled($gdimg_mask_resized, $gdimg_mask, 0, 0, 0, 0, ImageSX($gdimg_image), ImageSY($gdimg_image), ImageSX($gdimg_mask), ImageSY($gdimg_mask));
- if ($gdimg_mask_blendtemp = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg_image), ImageSY($gdimg_image))) {
-
- $color_background = ImageColorAllocate($gdimg_mask_blendtemp, 0, 0, 0);
- ImageFilledRectangle($gdimg_mask_blendtemp, 0, 0, ImageSX($gdimg_mask_blendtemp), ImageSY($gdimg_mask_blendtemp), $color_background);
- ImageAlphaBlending($gdimg_mask_blendtemp, false);
- ImageSaveAlpha($gdimg_mask_blendtemp, true);
- for ($x = 0; $x < ImageSX($gdimg_image); $x++) {
- for ($y = 0; $y < ImageSY($gdimg_image); $y++) {
- //$RealPixel = phpthumb_functions::GetPixelColor($gdimg_mask_blendtemp, $x, $y);
- $RealPixel = phpthumb_functions::GetPixelColor($gdimg_image, $x, $y);
- $MaskPixel = phpthumb_functions::GrayscalePixel(phpthumb_functions::GetPixelColor($gdimg_mask_resized, $x, $y));
- $MaskAlpha = 127 - (floor($MaskPixel['red'] / 2) * (1 - ($RealPixel['alpha'] / 127)));
- $newcolor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_mask_blendtemp, $RealPixel['red'], $RealPixel['green'], $RealPixel['blue'], $MaskAlpha);
- ImageSetPixel($gdimg_mask_blendtemp, $x, $y, $newcolor);
- }
- }
- ImageAlphaBlending($gdimg_image, false);
- ImageSaveAlpha($gdimg_image, true);
- ImageCopy($gdimg_image, $gdimg_mask_blendtemp, 0, 0, 0, 0, ImageSX($gdimg_mask_blendtemp), ImageSY($gdimg_mask_blendtemp));
- ImageDestroy($gdimg_mask_blendtemp);
-
- } else {
- $this->DebugMessage('ImageCreateFunction() failed', __FILE__, __LINE__);
- }
- ImageDestroy($gdimg_mask_resized);
-
- } else {
- $this->DebugMessage('ImageCreateFunction() failed', __FILE__, __LINE__);
- }
-
- } else {
- // alpha merging requires PHP v4.3.2+
- $this->DebugMessage('Skipping ApplyMask() technique because PHP is v"'.phpversion().'"', __FILE__, __LINE__);
- }
- return true;
- }
-
-
- function Bevel(&$gdimg, $width, $hexcolor1, $hexcolor2) {
- $width = ($width ? $width : 5);
- $hexcolor1 = ($hexcolor1 ? $hexcolor1 : 'FFFFFF');
- $hexcolor2 = ($hexcolor2 ? $hexcolor2 : '000000');
-
- ImageAlphaBlending($gdimg, true);
- for ($i = 0; $i < $width; $i++) {
- $alpha = round(($i / $width) * 127);
- $color1[$i] = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor1, false, $alpha);
- $color2[$i] = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor2, false, $alpha);
-
- ImageLine($gdimg, $i, $i, $i, ImageSY($gdimg) - $i, $color1[$i]); // left
- ImageLine($gdimg, $i, $i, ImageSX($gdimg) - $i, $i, $color1[$i]); // top
- ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, ImageSX($gdimg) - $i, $i, $color2[$i]); // right
- ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, $i, ImageSY($gdimg) - $i, $color2[$i]); // bottom
- }
- return true;
- }
-
-
- function Blur(&$gdimg, $radius=0.5) {
- // Taken from Torstein Hønsi's phpUnsharpMask (see phpthumb.unsharp.php)
-
- $radius = round(max(0, min($radius, 50)) * 2);
- if (!$radius) {
- return false;
- }
-
- $w = ImageSX($gdimg);
- $h = ImageSY($gdimg);
- if ($imgBlur = ImageCreateTrueColor($w, $h)) {
- // Gaussian blur matrix:
- // 1 2 1
- // 2 4 2
- // 1 2 1
-
- // Move copies of the image around one pixel at the time and merge them with weight
- // according to the matrix. The same matrix is simply repeated for higher radii.
- for ($i = 0; $i < $radius; $i++) {
- ImageCopy ($imgBlur, $gdimg, 0, 0, 1, 1, $w - 1, $h - 1); // up left
- ImageCopyMerge($imgBlur, $gdimg, 1, 1, 0, 0, $w, $h, 50.00000); // down right
- ImageCopyMerge($imgBlur, $gdimg, 0, 1, 1, 0, $w - 1, $h, 33.33333); // down left
- ImageCopyMerge($imgBlur, $gdimg, 1, 0, 0, 1, $w, $h - 1, 25.00000); // up right
- ImageCopyMerge($imgBlur, $gdimg, 0, 0, 1, 0, $w - 1, $h, 33.33333); // left
- ImageCopyMerge($imgBlur, $gdimg, 1, 0, 0, 0, $w, $h, 25.00000); // right
- ImageCopyMerge($imgBlur, $gdimg, 0, 0, 0, 1, $w, $h - 1, 20.00000); // up
- ImageCopyMerge($imgBlur, $gdimg, 0, 1, 0, 0, $w, $h, 16.666667); // down
- ImageCopyMerge($imgBlur, $gdimg, 0, 0, 0, 0, $w, $h, 50.000000); // center
- ImageCopy ($gdimg, $imgBlur, 0, 0, 0, 0, $w, $h);
- }
- return true;
- }
- return false;
- }
-
-
- function BlurGaussian(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_GAUSSIAN_BLUR)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_GAUSSIAN_BLUR)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- $this->DebugMessage('FAILED: phpthumb_filters::BlurGaussian($gdimg) [using phpthumb_filters::Blur() instead]', __FILE__, __LINE__);
- return phpthumb_filters::Blur($gdimg, 0.5);
- }
-
-
- function BlurSelective(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_SELECTIVE_BLUR)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_SELECTIVE_BLUR)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- // currently not implemented "the hard way"
- $this->DebugMessage('FAILED: phpthumb_filters::BlurSelective($gdimg) [function not implemented]', __FILE__, __LINE__);
- return false;
- }
-
-
- function Brightness(&$gdimg, $amount=0) {
- if ($amount == 0) {
- return true;
- }
- $amount = max(-255, min(255, $amount));
-
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_BRIGHTNESS, $amount)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_BRIGHTNESS, '.$amount.')', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
-
- $scaling = (255 - abs($amount)) / 255;
- $baseamount = (($amount > 0) ? $amount : 0);
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- foreach ($OriginalPixel as $key => $value) {
- $NewPixel[$key] = round($baseamount + ($OriginalPixel[$key] * $scaling));
- }
- $newColor = ImageColorAllocate($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function Contrast(&$gdimg, $amount=0) {
- if ($amount == 0) {
- return true;
- }
- $amount = max(-255, min(255, $amount));
-
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_CONTRAST, $amount)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_CONTRAST, '.$amount.')', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
-
- if ($amount > 0) {
- $scaling = 1 + ($amount / 255);
- } else {
- $scaling = (255 - abs($amount)) / 255;
- }
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- foreach ($OriginalPixel as $key => $value) {
- $NewPixel[$key] = min(255, max(0, round($OriginalPixel[$key] * $scaling)));
- }
- $newColor = ImageColorAllocate($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- }
-
-
- function Colorize(&$gdimg, $amount, $targetColor) {
- $amount = (is_numeric($amount) ? $amount : 25);
- $targetColor = (phpthumb_functions::IsHexColor($targetColor) ? $targetColor : 'gray');
-
- if ($amount == 0) {
- return true;
- }
-
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if ($targetColor == 'gray') {
- $targetColor = '808080';
- }
- $r = substr($targetColor, 0, 2);
- $g = substr($targetColor, 2, 2);
- $b = substr($targetColor, 4, 2);
- if (ImageFilter($gdimg, IMG_FILTER_COLORIZE, $r, $g, $b)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_COLORIZE)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
-
- // overridden below for grayscale
- if ($targetColor != 'gray') {
- $TargetPixel['red'] = hexdec(substr($targetColor, 0, 2));
- $TargetPixel['green'] = hexdec(substr($targetColor, 2, 2));
- $TargetPixel['blue'] = hexdec(substr($targetColor, 4, 2));
- }
-
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- if ($targetColor == 'gray') {
- $TargetPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
- }
- foreach ($TargetPixel as $key => $value) {
- $NewPixel[$key] = round(max(0, min(255, ($OriginalPixel[$key] * ((100 - $amount) / 100)) + ($TargetPixel[$key] * ($amount / 100)))));
- }
- //$newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue'], $OriginalPixel['alpha']);
- $newColor = ImageColorAllocate($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function Crop(&$gdimg, $left=0, $right=0, $top=0, $bottom=0) {
- if (!$left && !$right && !$top && !$bottom) {
- return true;
- }
- $oldW = ImageSX($gdimg);
- $oldH = ImageSY($gdimg);
- if (($left > 0) && ($left < 1)) { $left = round($left * $oldW); }
- if (($right > 0) && ($right < 1)) { $right = round($right * $oldW); }
- if (($top > 0) && ($top < 1)) { $top = round($top * $oldH); }
- if (($bottom > 0) && ($bottom < 1)) { $bottom = round($bottom * $oldH); }
- $right = min($oldW - $left - 1, $right);
- $bottom = min($oldH - $top - 1, $bottom);
- $newW = $oldW - $left - $right;
- $newH = $oldH - $top - $bottom;
-
- if ($imgCropped = ImageCreateTrueColor($newW, $newH)) {
- ImageCopy($imgCropped, $gdimg, 0, 0, $left, $top, $newW, $newH);
- if ($gdimg = ImageCreateTrueColor($newW, $newH)) {
- ImageCopy($gdimg, $imgCropped, 0, 0, 0, 0, $newW, $newH);
- ImageDestroy($imgCropped);
- return true;
- }
- ImageDestroy($imgCropped);
- }
- return false;
- }
-
-
- function Desaturate(&$gdimg, $amount, $color='') {
- if ($amount == 0) {
- return true;
- }
- return phpthumb_filters::Colorize($gdimg, $amount, (phpthumb_functions::IsHexColor($color) ? $color : 'gray'));
- }
-
-
- function DropShadow(&$gdimg, $distance, $width, $hexcolor, $angle, $fade) {
- if (phpthumb_functions::gd_version() < 2) {
- return false;
- }
- $distance = ($distance ? $distance : 10);
- $width = ($width ? $width : 10);
- $hexcolor = ($hexcolor ? $hexcolor : '000000');
- $angle = ($angle ? $angle : 225);
- $fade = ($fade ? $fade : 1);
-
- $width_shadow = cos(deg2rad($angle)) * ($distance + $width);
- $height_shadow = sin(deg2rad($angle)) * ($distance + $width);
-
- $scaling = min(ImageSX($gdimg) / (ImageSX($gdimg) + abs($width_shadow)), ImageSY($gdimg) / (ImageSY($gdimg) + abs($height_shadow)));
-
- for ($i = 0; $i < $width; $i++) {
- $WidthAlpha[$i] = (abs(($width / 2) - $i) / $width) * $fade;
- $Offset['x'] = cos(deg2rad($angle)) * ($distance + $i);
- $Offset['y'] = sin(deg2rad($angle)) * ($distance + $i);
- }
-
- $tempImageWidth = ImageSX($gdimg) + abs($Offset['x']);
- $tempImageHeight = ImageSY($gdimg) + abs($Offset['y']);
-
- if ($gdimg_dropshadow_temp = phpthumb_functions::ImageCreateFunction($tempImageWidth, $tempImageHeight)) {
-
- ImageAlphaBlending($gdimg_dropshadow_temp, false);
- ImageSaveAlpha($gdimg_dropshadow_temp, true);
- $transparent1 = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_dropshadow_temp, 0, 0, 0, 127);
- ImageFill($gdimg_dropshadow_temp, 0, 0, $transparent1);
-
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $PixelMap[$x][$y] = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- }
- }
- for ($x = 0; $x < $tempImageWidth; $x++) {
- for ($y = 0; $y < $tempImageHeight; $y++) {
- //for ($i = 0; $i < $width; $i++) {
- for ($i = 0; $i < 1; $i++) {
- if (!isset($PixelMap[$x][$y]['alpha']) || ($PixelMap[$x][$y]['alpha'] > 0)) {
- if (isset($PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha']) && ($PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha'] < 127)) {
- $thisColor = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor, false, $PixelMap[$x + $Offset['x']][$y + $Offset['y']]['alpha']);
- ImageSetPixel($gdimg_dropshadow_temp, $x, $y, $thisColor);
- }
- }
- }
- }
- }
-
- ImageAlphaBlending($gdimg_dropshadow_temp, true);
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- if ($PixelMap[$x][$y]['alpha'] < 127) {
- $thisColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_dropshadow_temp, $PixelMap[$x][$y]['red'], $PixelMap[$x][$y]['green'], $PixelMap[$x][$y]['blue'], $PixelMap[$x][$y]['alpha']);
- ImageSetPixel($gdimg_dropshadow_temp, $x, $y, $thisColor);
- }
- }
- }
-
- ImageSaveAlpha($gdimg, true);
- ImageAlphaBlending($gdimg, false);
- //$this->is_alpha = true;
- $transparent2 = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0, 0, 0, 127);
- ImageFilledRectangle($gdimg, 0, 0, ImageSX($gdimg), ImageSY($gdimg), $transparent2);
- ImageCopyResampled($gdimg, $gdimg_dropshadow_temp, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg), ImageSX($gdimg_dropshadow_temp), ImageSY($gdimg_dropshadow_temp));
-
- ImageDestroy($gdimg_dropshadow_temp);
- }
- return true;
- }
-
-
- function EdgeDetect(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_EDGEDETECT)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_EDGEDETECT)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- // currently not implemented "the hard way"
- $this->DebugMessage('FAILED: phpthumb_filters::EdgeDetect($gdimg) [function not implemented]', __FILE__, __LINE__);
- return false;
- }
-
-
- function Elipse($gdimg) {
- if (phpthumb_functions::gd_version() < 2) {
- return false;
- }
- // generate mask at twice desired resolution and downsample afterwards for easy antialiasing
- if ($gdimg_elipsemask_double = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg) * 2, ImageSY($gdimg) * 2)) {
- if ($gdimg_elipsemask = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
-
- $color_transparent = ImageColorAllocate($gdimg_elipsemask_double, 255, 255, 255);
- ImageFilledEllipse($gdimg_elipsemask_double, ImageSX($gdimg), ImageSY($gdimg), (ImageSX($gdimg) - 1) * 2, (ImageSY($gdimg) - 1) * 2, $color_transparent);
- ImageCopyResampled($gdimg_elipsemask, $gdimg_elipsemask_double, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg), ImageSX($gdimg) * 2, ImageSY($gdimg) * 2);
-
- phpthumb_filters::ApplyMask($gdimg_elipsemask, $gdimg);
- ImageDestroy($gdimg_elipsemask);
- return true;
-
- } else {
- $this->DebugMessage('$gdimg_elipsemask = phpthumb_functions::ImageCreateFunction() failed', __FILE__, __LINE__);
- }
- ImageDestroy($gdimg_elipsemask_double);
- } else {
- $this->DebugMessage('$gdimg_elipsemask_double = phpthumb_functions::ImageCreateFunction() failed', __FILE__, __LINE__);
- }
- return false;
- }
-
-
- function Emboss(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_EMBOSS)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_EMBOSS)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- // currently not implemented "the hard way"
- $this->DebugMessage('FAILED: phpthumb_filters::Emboss($gdimg) [function not implemented]', __FILE__, __LINE__);
- return false;
- }
-
-
- function Flip(&$gdimg, $x=false, $y=false) {
- if (!$x && !$y) {
- return false;
- }
- if ($tempImage = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
- if ($x) {
- ImageCopy($tempImage, $gdimg, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg));
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- ImageCopy($gdimg, $tempImage, ImageSX($gdimg) - 1 - $x, 0, $x, 0, 1, ImageSY($gdimg));
- }
- }
- if ($y) {
- ImageCopy($tempImage, $gdimg, 0, 0, 0, 0, ImageSX($gdimg), ImageSY($gdimg));
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- ImageCopy($gdimg, $tempImage, 0, ImageSY($gdimg) - 1 - $y, 0, $y, ImageSX($gdimg), 1);
- }
- }
- ImageDestroy($tempImage);
- }
- return true;
- }
-
-
- function Frame(&$gdimg, $frame_width, $edge_width, $hexcolor_frame, $hexcolor1, $hexcolor2) {
- $frame_width = ($frame_width ? $frame_width : 5);
- $edge_width = ($edge_width ? $edge_width : 1);
- $hexcolor_frame = ($hexcolor_frame ? $hexcolor_frame : 'CCCCCC');
- $hexcolor1 = ($hexcolor1 ? $hexcolor1 : 'FFFFFF');
- $hexcolor2 = ($hexcolor2 ? $hexcolor2 : '000000');
-
- $color_frame = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor_frame);
- $color1 = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor1);
- $color2 = phpthumb_functions::ImageHexColorAllocate($gdimg, $hexcolor2);
- for ($i = 0; $i < $edge_width; $i++) {
- // outer bevel
- ImageLine($gdimg, $i, $i, $i, ImageSY($gdimg) - $i, $color1); // left
- ImageLine($gdimg, $i, $i, ImageSX($gdimg) - $i, $i, $color1); // top
- ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, ImageSX($gdimg) - $i, $i, $color2); // right
- ImageLine($gdimg, ImageSX($gdimg) - $i, ImageSY($gdimg) - $i, $i, ImageSY($gdimg) - $i, $color2); // bottom
- }
- for ($i = 0; $i < $frame_width; $i++) {
- // actual frame
- ImageRectangle($gdimg, $edge_width + $i, $edge_width + $i, ImageSX($gdimg) - $edge_width - $i, ImageSY($gdimg) - $edge_width - $i, $color_frame);
- }
- for ($i = 0; $i < $edge_width; $i++) {
- // inner bevel
- ImageLine($gdimg, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $color2); // left
- ImageLine($gdimg, $frame_width + $edge_width + $i, $frame_width + $edge_width + $i, ImageSX($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, $color2); // top
- ImageLine($gdimg, ImageSX($gdimg) - $frame_width - $edge_width - $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, ImageSX($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, $color1); // right
- ImageLine($gdimg, ImageSX($gdimg) - $frame_width - $edge_width - $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $frame_width + $edge_width + $i, ImageSY($gdimg) - $frame_width - $edge_width - $i, $color1); // bottom
- }
- return true;
- }
-
-
- function Gamma(&$gdimg, $amount) {
- if (number_format($amount, 4) == '1.0000') {
- return true;
- }
- return ImageGammaCorrect($gdimg, 1.0, $amount);
- }
-
-
- function Grayscale(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_GRAYSCALE)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_GRAYSCALE)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- return phpthumb_filters::Colorize($gdimg, 100, 'gray');
- }
-
-
- function HistogramAnalysis(&$gdimg, $calculateGray=false) {
- $ImageSX = ImageSX($gdimg);
- $ImageSY = ImageSY($gdimg);
- for ($x = 0; $x < $ImageSX; $x++) {
- for ($y = 0; $y < $ImageSY; $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- @$Analysis['red'][$OriginalPixel['red']]++;
- @$Analysis['green'][$OriginalPixel['green']]++;
- @$Analysis['blue'][$OriginalPixel['blue']]++;
- @$Analysis['alpha'][$OriginalPixel['alpha']]++;
- if ($calculateGray) {
- $GrayPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
- @$Analysis['gray'][$GrayPixel['red']]++;
- }
- }
- }
- $keys = array('red', 'green', 'blue', 'alpha');
- if ($calculateGray) {
- $keys[] = 'gray';
- }
- foreach ($keys as $dummy => $key) {
- ksort($Analysis[$key]);
- }
- return $Analysis;
- }
-
-
- function HistogramStretch(&$gdimg, $band='*', $min=-1, $max=-1) {
- // equivalent of "Auto Contrast" in Adobe Photoshop
-
- $Analysis = phpthumb_filters::HistogramAnalysis($gdimg, true);
- $keys = array('r'=>'red', 'g'=>'green', 'b'=>'blue', 'a'=>'alpha', '*'=>'gray');
- if (!isset($keys[$band])) {
- return false;
- }
- $key = $keys[$band];
-
- // If the absolute brightest and darkest pixels are used then one random
- // pixel in the image could throw off the whole system. Instead, count up/down
- // from the limit and allow 0.1% of brightest/darkest pixels to be clipped to min/max
- $clip_threshold = ImageSX($gdimg) * ImageSX($gdimg) * 0.001;
- if ($min >= 0) {
- $range_min = min($min, 255);
- } else {
- $countsum = 0;
- for ($i = 0; $i <= 255; $i++) {
- $countsum += @$Analysis[$key][$i];
- if ($countsum >= $clip_threshold) {
- $range_min = $i - 1;
- break;
- }
- }
- $range_min = max($range_min, 0);
- }
- if ($max >= 0) {
- $range_max = max($max, 255);
- } else {
- $countsum = 0;
- $threshold = ImageSX($gdimg) * ImageSX($gdimg) * 0.001; // 0.1% of brightest and darkest pixels can be clipped
- for ($i = 255; $i >= 0; $i--) {
- $countsum += @$Analysis[$key][$i];
- if ($countsum >= $clip_threshold) {
- $range_max = $i + 1;
- break;
- }
- }
- $range_max = min($range_max, 255);
- }
- $range_scale = (($range_max == $range_min) ? 1 : (255 / ($range_max - $range_min)));
- if (($range_min == 0) && ($range_max == 255)) {
- // no adjustment neccesary - don't waste CPU time!
- return true;
- }
-
- $ImageSX = ImageSX($gdimg);
- $ImageSY = ImageSY($gdimg);
- for ($x = 0; $x < $ImageSX; $x++) {
- for ($y = 0; $y < $ImageSY; $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- if ($band == '*') {
- $new['red'] = min(255, max(0, ($OriginalPixel['red'] - $range_min) * $range_scale));
- $new['green'] = min(255, max(0, ($OriginalPixel['green'] - $range_min) * $range_scale));
- $new['blue'] = min(255, max(0, ($OriginalPixel['blue'] - $range_min) * $range_scale));
- $new['alpha'] = min(255, max(0, ($OriginalPixel['alpha'] - $range_min) * $range_scale));
- } else {
- $new = $OriginalPixel;
- $new[$key] = min(255, max(0, ($OriginalPixel[$key] - $range_min) * $range_scale));
- }
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $new['red'], $new['green'], $new['blue'], $new['alpha']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
-
- return true;
- }
-
-
- function HistogramOverlay(&$gdimg, $bands='*', $colors='', $width=0.25, $height=0.25, $alignment='BR', $opacity=50, $margin=5) {
- $Analysis = phpthumb_filters::HistogramAnalysis($gdimg, true);
-
- $histW = round(($width > 1) ? min($width, ImageSX($gdimg)) : ImageSX($gdimg) * $width);
- $histH = round(($width > 1) ? min($width, ImageSX($gdimg)) : ImageSX($gdimg) * $width);
- if ($gdHist = ImageCreateTrueColor($histW, $histH)) {
- $color_back = phpthumb_functions::ImageColorAllocateAlphaSafe($gdHist, 0, 0, 0, 127);
- ImageFilledRectangle($gdHist, 0, 0, $histW, $histH, $color_back);
- ImageAlphaBlending($gdHist, false);
- ImageSaveAlpha($gdHist, true);
-
- if ($gdHistTemp = ImageCreateTrueColor(256, 100)) {
- $color_back_temp = phpthumb_functions::ImageColorAllocateAlphaSafe($gdHistTemp, 255, 0, 255, 127);
- ImageAlphaBlending($gdHistTemp, false);
- ImageSaveAlpha($gdHistTemp, true);
- ImageFilledRectangle($gdHistTemp, 0, 0, ImageSX($gdHistTemp), ImageSY($gdHistTemp), $color_back_temp);
-
- $DefaultColors = array('r'=>'FF0000', 'g'=>'00FF00', 'b'=>'0000FF', 'a'=>'999999', '*'=>'FFFFFF');
- $Colors = explode(';', $colors);
- $BandsToGraph = array_unique(preg_split('//', $bands));
- $keys = array('r'=>'red', 'g'=>'green', 'b'=>'blue', 'a'=>'alpha', '*'=>'gray');
- foreach ($BandsToGraph as $key => $band) {
- if (!isset($keys[$band])) {
- continue;
- }
- $PeakValue = max($Analysis[$keys[$band]]);
- $thisColor = phpthumb_functions::ImageHexColorAllocate($gdHistTemp, phpthumb_functions::IsHexColor(@$Colors[$key]) ? $Colors[$key] : $DefaultColors[$band]);
- $tempHeight = ImageSY($gdHistTemp);
- for ($x = 0; $x <= 255; $x++) {
- ImageLine($gdHistTemp, $x, $tempHeight - 1, $x, $tempHeight - 1 - round(@$Analysis[$keys[$band]][$x] / $PeakValue * $tempHeight), $thisColor);
- }
- ImageLine($gdHistTemp, 0, $tempHeight - 1, 255, $tempHeight - 1, $thisColor);
- ImageLine($gdHistTemp, 0, $tempHeight - 2, 255, $tempHeight - 2, $thisColor);
- }
- ImageCopyResampled($gdHist, $gdHistTemp, 0, 0, 0, 0, ImageSX($gdHist), ImageSY($gdHist), ImageSX($gdHistTemp), ImageSY($gdHistTemp));
- ImageDestroy($gdHistTemp);
- } else {
- return false;
- }
-
- phpthumb_filters::WatermarkOverlay($gdimg, $gdHist, $alignment, $opacity, $margin);
- ImageDestroy($gdHist);
- return true;
- }
- return false;
- }
-
-
- function ImageBorder(&$gdimg, $border_width, $radius_x, $radius_y, $hexcolor_border) {
- $border_width = ($border_width ? $border_width : 1);
- $radius_x = ($radius_x ? $radius_x : 0);
- $radius_y = ($radius_y ? $radius_y : 0);
-
- $output_width = ImageSX($gdimg);
- $output_height = ImageSY($gdimg);
-
- list($new_width, $new_height) = phpthumb_functions::ProportionalResize($output_width, $output_height, $output_width - max($border_width * 2, $radius_x), $output_height - max($border_width * 2, $radius_y));
- $offset_x = ($radius_x ? $output_width - $new_width - $radius_x : 0);
- $offset_y = ($radius_y ? $output_height - $new_height - $radius_y : 0);
-
-//header('Content-Type: image/png');
-//ImagePNG($gdimg);
-//exit;
- if ($gd_border_canvas = phpthumb_functions::ImageCreateFunction($output_width, $output_height)) {
-
- ImageSaveAlpha($gd_border_canvas, true);
- ImageAlphaBlending($gd_border_canvas, false);
- $color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($gd_border_canvas, 255, 255, 255, 127);
- ImageFilledRectangle($gd_border_canvas, 0, 0, $output_width, $output_height, $color_background);
-
- $color_border = phpthumb_functions::ImageHexColorAllocate($gd_border_canvas, (phpthumb_functions::IsHexColor($hexcolor_border) ? $hexcolor_border : '000000'));
-
- for ($i = 0; $i < $border_width; $i++) {
- ImageLine($gd_border_canvas, floor($offset_x / 2) + $radius_x, $i, $output_width - $radius_x - ceil($offset_x / 2), $i, $color_border); // top
- ImageLine($gd_border_canvas, floor($offset_x / 2) + $radius_x, $output_height - 1 - $i, $output_width - $radius_x - ceil($offset_x / 2), $output_height - 1 - $i, $color_border); // bottom
- ImageLine($gd_border_canvas, floor($offset_x / 2) + $i, $radius_y, floor($offset_x / 2) + $i, $output_height - $radius_y, $color_border); // left
- ImageLine($gd_border_canvas, $output_width - 1 - $i - ceil($offset_x / 2), $radius_y, $output_width - 1 - $i - ceil($offset_x / 2), $output_height - $radius_y, $color_border); // right
- }
-
- if ($radius_x && $radius_y) {
-
- // PHP bug: ImageArc() with thicknesses > 1 give bad/undesirable/unpredicatable results
- // Solution: Draw multiple 1px arcs side-by-side.
-
- // Problem: parallel arcs give strange/ugly antialiasing problems
- // Solution: draw non-parallel arcs, from one side of the line thickness at the start angle
- // to the opposite edge of the line thickness at the terminating angle
- for ($thickness_offset = 0; $thickness_offset < $border_width; $thickness_offset++) {
- ImageArc($gd_border_canvas, floor($offset_x / 2) + 1 + $radius_x, $thickness_offset - 1 + $radius_y, $radius_x * 2, $radius_y * 2, 180, 270, $color_border); // top-left
- ImageArc($gd_border_canvas, $output_width - $radius_x - 1 - ceil($offset_x / 2), $thickness_offset - 1 + $radius_y, $radius_x * 2, $radius_y * 2, 270, 360, $color_border); // top-right
- ImageArc($gd_border_canvas, $output_width - $radius_x - 1 - ceil($offset_x / 2), $output_height - $thickness_offset - $radius_y, $radius_x * 2, $radius_y * 2, 0, 90, $color_border); // bottom-right
- ImageArc($gd_border_canvas, floor($offset_x / 2) + 1 + $radius_x, $output_height - $thickness_offset - $radius_y, $radius_x * 2, $radius_y * 2, 90, 180, $color_border); // bottom-left
- }
- if ($border_width > 1) {
- for ($thickness_offset = 0; $thickness_offset < $border_width; $thickness_offset++) {
- ImageArc($gd_border_canvas, floor($offset_x / 2) + $thickness_offset + $radius_x, $radius_y, $radius_x * 2, $radius_y * 2, 180, 270, $color_border); // top-left
- ImageArc($gd_border_canvas, $output_width - $thickness_offset - $radius_x - 1 - ceil($offset_x / 2), $radius_y, $radius_x * 2, $radius_y * 2, 270, 360, $color_border); // top-right
- ImageArc($gd_border_canvas, $output_width - $thickness_offset - $radius_x - 1 - ceil($offset_x / 2), $output_height - $radius_y, $radius_x * 2, $radius_y * 2, 0, 90, $color_border); // bottom-right
- ImageArc($gd_border_canvas, floor($offset_x / 2) + $thickness_offset + $radius_x, $output_height - $radius_y, $radius_x * 2, $radius_y * 2, 90, 180, $color_border); // bottom-left
- }
- }
-
- }
- $this->phpThumbObject->ImageResizeFunction($gd_border_canvas, $gdimg, floor(($output_width - $new_width) / 2), round(($output_height - $new_height) / 2), 0, 0, $new_width, $new_height, $output_width, $output_height);
-
- ImageDestroy($gdimg);
- $gdimg = phpthumb_functions::ImageCreateFunction($output_width, $output_height);
- ImageSaveAlpha($gdimg, true);
- ImageAlphaBlending($gdimg, false);
- $gdimg_color_background = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 255, 255, 255, 127);
- ImageFilledRectangle($gdimg, 0, 0, $output_width, $output_height, $gdimg_color_background);
-
- ImageCopy($gdimg, $gd_border_canvas, 0, 0, 0, 0, $output_width, $output_height);
- //$gdimg = $gd_border_canvas;
- ImageDestroy($gd_border_canvas);
- return true;
-
-
- } else {
- $this->DebugMessage('FAILED: $gd_border_canvas = phpthumb_functions::ImageCreateFunction('.$output_width.', '.$output_height.')', __FILE__, __LINE__);
- }
- return false;
- }
-
-
- function MeanRemoval(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_MEAN_REMOVAL)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_MEAN_REMOVAL)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- // currently not implemented "the hard way"
- $this->DebugMessage('FAILED: phpthumb_filters::MeanRemoval($gdimg) [function not implemented]', __FILE__, __LINE__);
- return false;
- }
-
-
- function Negative(&$gdimg) {
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_NEGATE)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_NEGATE)', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- $ImageSX = ImageSX($gdimg);
- $ImageSY = ImageSY($gdimg);
- for ($x = 0; $x < $ImageSX; $x++) {
- for ($y = 0; $y < $ImageSY; $y++) {
- $currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, (~$currentPixel['red'] & 0xFF), (~$currentPixel['green'] & 0xFF), (~$currentPixel['blue'] & 0xFF), $currentPixel['alpha']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function RoundedImageCorners(&$gdimg, $radius_x, $radius_y) {
- // generate mask at twice desired resolution and downsample afterwards for easy antialiasing
- // mask is generated as a white double-size elipse on a triple-size black background and copy-paste-resampled
- // onto a correct-size mask image as 4 corners due to errors when the entire mask is resampled at once (gray edges)
- if ($gdimg_cornermask_triple = phpthumb_functions::ImageCreateFunction($radius_x * 6, $radius_y * 6)) {
- if ($gdimg_cornermask = phpthumb_functions::ImageCreateFunction(ImageSX($gdimg), ImageSY($gdimg))) {
-
- $color_transparent = ImageColorAllocate($gdimg_cornermask_triple, 255, 255, 255);
- ImageFilledEllipse($gdimg_cornermask_triple, $radius_x * 3, $radius_y * 3, $radius_x * 4, $radius_y * 4, $color_transparent);
-
- ImageFilledRectangle($gdimg_cornermask, 0, 0, ImageSX($gdimg), ImageSY($gdimg), $color_transparent);
-
- ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, 0, 0, $radius_x, $radius_y, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
- ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, 0, ImageSY($gdimg) - $radius_y, $radius_x, $radius_y * 3, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
- ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, ImageSX($gdimg) - $radius_x, ImageSY($gdimg) - $radius_y, $radius_x * 3, $radius_y * 3, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
- ImageCopyResampled($gdimg_cornermask, $gdimg_cornermask_triple, ImageSX($gdimg) - $radius_x, 0, $radius_x * 3, $radius_y, $radius_x, $radius_y, $radius_x * 2, $radius_y * 2);
-
- phpthumb_filters::ApplyMask($gdimg_cornermask, $gdimg);
- ImageDestroy($gdimg_cornermask);
- $this->DebugMessage('RoundedImageCorners('.$radius_x.', '.$radius_y.') succeeded', __FILE__, __LINE__);
- return true;
-
- } else {
- $this->DebugMessage('FAILED: $gdimg_cornermask = phpthumb_functions::ImageCreateFunction('.ImageSX($gdimg).', '.ImageSY($gdimg).')', __FILE__, __LINE__);
- }
- ImageDestroy($gdimg_cornermask_triple);
-
- } else {
- $this->DebugMessage('FAILED: $gdimg_cornermask_triple = phpthumb_functions::ImageCreateFunction('.($radius_x * 6).', '.($radius_y * 6).')', __FILE__, __LINE__);
- }
- return false;
- }
-
-
- function Saturation(&$gdimg, $amount, $color='') {
- if ($amount == 0) {
- return true;
- } elseif ($amount > 0) {
- $amount = 0 - $amount;
- } else {
- $amount = abs($amount);
- }
- return phpthumb_filters::Desaturate($gdimg, $amount, $color);
- }
-
-
- function Sepia(&$gdimg, $amount, $targetColor) {
- $amount = (is_numeric($amount) ? max(0, min(100, $amount)) : 50);
- $targetColor = (phpthumb_functions::IsHexColor($targetColor) ? $targetColor : 'A28065');
-
- if ($amount == 0) {
- return true;
- }
-
- $TargetPixel['red'] = hexdec(substr($targetColor, 0, 2));
- $TargetPixel['green'] = hexdec(substr($targetColor, 2, 2));
- $TargetPixel['blue'] = hexdec(substr($targetColor, 4, 2));
-
- $ImageSX = ImageSX($gdimg);
- $ImageSY = ImageSY($gdimg);
- for ($x = 0; $x < $ImageSX; $x++) {
- for ($y = 0; $y < $ImageSY; $y++) {
- $OriginalPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- $GrayPixel = phpthumb_functions::GrayscalePixel($OriginalPixel);
-
- // http://www.gimpguru.org/Tutorials/SepiaToning/
- // "In the traditional sepia toning process, the tinting occurs most in
- // the mid-tones: the lighter and darker areas appear to be closer to B&W."
- $SepiaAmount = ((128 - abs($GrayPixel['red'] - 128)) / 128) * ($amount / 100);
-
- foreach ($TargetPixel as $key => $value) {
- $NewPixel[$key] = round(max(0, min(255, $GrayPixel[$key] * (1 - $SepiaAmount) + ($TargetPixel[$key] * $SepiaAmount))));
- }
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, $NewPixel['red'], $NewPixel['green'], $NewPixel['blue'], $OriginalPixel['alpha']);
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function Smooth(&$gdimg, $amount=6) {
- $amount = min(25, max(0, $amount));
- if ($amount == 0) {
- return true;
- }
- if (phpthumb_functions::version_compare_replacement(phpversion(), '5.0.0', '>=') && phpthumb_functions::gd_is_bundled()) {
- if (ImageFilter($gdimg, IMG_FILTER_SMOOTH, $amount)) {
- return true;
- }
- $this->DebugMessage('FAILED: ImageFilter($gdimg, IMG_FILTER_SMOOTH, '.$amount.')', __FILE__, __LINE__);
- // fall through and try it the hard way
- }
- // currently not implemented "the hard way"
- $this->DebugMessage('FAILED: phpthumb_filters::Smooth($gdimg, '.$amount.') [function not implemented]', __FILE__, __LINE__);
- return false;
- }
-
-
- function Threshold(&$gdimg, $cutoff) {
- $cutoff = min(255, max(0, ($cutoff ? $cutoff : 128)));
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- $grayPixel = phpthumb_functions::GrayscalePixel($currentPixel);
- if ($grayPixel['red'] < $cutoff) {
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0x00, 0x00, 0x00, $currentPixel['alpha']);
- } else {
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg, 0xFF, 0xFF, 0xFF, $currentPixel['alpha']);
- }
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function ImageTrueColorToPalette2(&$image, $dither, $ncolors) {
- // http://www.php.net/manual/en/function.imagetruecolortopalette.php
- // zmorris at zsculpt dot com (17-Aug-2004 06:58)
- $width = ImageSX($image);
- $height = ImageSY($image);
- $image_copy = ImageCreateTrueColor($width, $height);
- //ImageCopyMerge($image_copy, $image, 0, 0, 0, 0, $width, $height, 100);
- ImageCopy($image_copy, $image, 0, 0, 0, 0, $width, $height);
- ImageTrueColorToPalette($image, $dither, $ncolors);
- ImageColorMatch($image_copy, $image);
- ImageDestroy($image_copy);
- return true;
- }
-
- function ReduceColorDepth(&$gdimg, $colors=256, $dither=true) {
- $colors = max(min($colors, 256), 2);
- // ImageTrueColorToPalette usually makes ugly colors, the replacement is a bit better
- //ImageTrueColorToPalette($gdimg, $dither, $colors);
- phpthumb_filters::ImageTrueColorToPalette2($gdimg, $dither, $colors);
- return true;
- }
-
-
- function WhiteBalance(&$gdimg, $targetColor='') {
- if (phpthumb_functions::IsHexColor($targetColor)) {
- $targetPixel = array(
- 'red' => hexdec(substr($targetColor, 0, 2)),
- 'green' => hexdec(substr($targetColor, 2, 2)),
- 'blue' => hexdec(substr($targetColor, 4, 2))
- );
- } else {
- $Analysis = phpthumb_filters::HistogramAnalysis($gdimg, false);
- $targetPixel = array(
- 'red' => max(array_keys($Analysis['red'])),
- 'green' => max(array_keys($Analysis['green'])),
- 'blue' => max(array_keys($Analysis['blue']))
- );
- }
- $grayValue = phpthumb_functions::GrayscaleValue($targetPixel['red'], $targetPixel['green'], $targetPixel['blue']);
- $scaleR = $grayValue / $targetPixel['red'];
- $scaleG = $grayValue / $targetPixel['green'];
- $scaleB = $grayValue / $targetPixel['blue'];
-
- for ($x = 0; $x < ImageSX($gdimg); $x++) {
- for ($y = 0; $y < ImageSY($gdimg); $y++) {
- $currentPixel = phpthumb_functions::GetPixelColor($gdimg, $x, $y);
- $newColor = phpthumb_functions::ImageColorAllocateAlphaSafe(
- $gdimg,
- max(0, min(255, round($currentPixel['red'] * $scaleR))),
- max(0, min(255, round($currentPixel['green'] * $scaleG))),
- max(0, min(255, round($currentPixel['blue'] * $scaleB))),
- $currentPixel['alpha']
- );
- ImageSetPixel($gdimg, $x, $y, $newColor);
- }
- }
- return true;
- }
-
-
- function WatermarkText(&$gdimg, $text, $size, $alignment, $hex_color='000000', $ttffont='', $opacity=100, $margin=5, $angle=0, $bg_color=false, $bg_opacity=0, $fillextend='') {
- // text watermark requested
- if (!$text) {
- return false;
- }
- ImageAlphaBlending($gdimg, true);
-
- $metaTextArray = array(
- '^Fb' => $this->phpThumbObject->getimagesizeinfo['filesize'],
- '^Fk' => round($this->phpThumbObject->getimagesizeinfo['filesize'] / 1024),
- '^Fm' => round($this->phpThumbObject->getimagesizeinfo['filesize'] / 1048576),
- '^X' => $this->phpThumbObject->getimagesizeinfo[0],
- '^Y' => $this->phpThumbObject->getimagesizeinfo[1],
- '^x' => ImageSX($gdimg),
- '^y' => ImageSY($gdimg),
- '^^' => '^',
- );
- $text = strtr($text, $metaTextArray);
-
- $text = str_replace("\r\n", "\n", $text);
- $text = str_replace("\r", "\n", $text);
- $textlines = explode("\n", $text);
-
- if (@is_readable($ttffont) && is_file($ttffont)) {
-
- $opacity = 100 - intval(max(min($opacity, 100), 0));
-
- $this->DebugMessage('Using TTF font "'.$ttffont.'"', __FILE__, __LINE__);
-
- $TTFbox = ImageTTFbBox($size, $angle, $ttffont, $text);
-
- $min_x = min($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
- $max_x = max($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
- //$text_width = round($max_x - $min_x + ($size * 0.5));
- $text_width = round($max_x - $min_x);
-
- $min_y = min($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
- $max_y = max($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
- //$text_height = round($max_y - $min_y + ($size * 0.5));
- $text_height = round($max_y - $min_y);
-
- $TTFboxChar = ImageTTFbBox($size, $angle, $ttffont, 'jH');
- $char_min_y = min($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
- $char_max_y = max($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
- $char_height = round($char_max_y - $char_min_y);
-
- switch ($alignment) {
- case 'T':
- $text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
- $text_origin_y = $char_height + $margin;
- break;
-
- case 'B':
- $text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
- $text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin;
- break;
-
- case 'L':
- $text_origin_x = $margin;
- $text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
- break;
-
- case 'R':
- $text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
- $text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
- break;
-
- case 'C':
- $text_origin_x = round((ImageSX($gdimg) - $text_width) / 2);
- $text_origin_y = round((ImageSY($gdimg) - $text_height) / 2) + $char_height;
- break;
-
- case 'TL':
- $text_origin_x = $margin;
- $text_origin_y = $char_height + $margin;
- break;
-
- case 'TR':
- $text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
- $text_origin_y = $char_height + $margin;
- break;
-
- case 'BL':
- $text_origin_x = $margin;
- $text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin;
- break;
-
- case 'BR':
- default:
- $text_origin_x = ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin;
- $text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin;
- break;
- }
- $letter_color_text = phpthumb_functions::ImageHexColorAllocate($gdimg, $hex_color, false, $opacity * 1.27);
-
- if ($alignment == '*') {
-
- $text_origin_y = $char_height + $margin;
- while (($text_origin_y - $text_height) < ImageSY($gdimg)) {
- $text_origin_x = $margin;
- while ($text_origin_x < ImageSX($gdimg)) {
- ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
- $text_origin_x += ($text_width + $margin);
- }
- $text_origin_y += ($text_height + $margin);
- }
-
- } else {
-
- //ImageRectangle($gdimg, $text_origin_x + $min_x, $text_origin_y + $TTFbox[1], $text_origin_x + $min_x + $text_width, $text_origin_y + $TTFbox[1] - $text_height, $letter_color_text);
- if (phpthumb_functions::IsHexColor($bg_color)) {
- $text_background_alpha = round(127 * ((100 - min(max(0, $bg_opacity), 100)) / 100));
- $text_color_background = phpthumb_functions::ImageHexColorAllocate($gdimg, $bg_color, false, $text_background_alpha);
- } else {
- $text_color_background = phpthumb_functions::ImageHexColorAllocate($gdimg, 'FFFFFF', false, 127);
- }
- $x1 = $text_origin_x + $min_x;
- $y1 = $text_origin_y + $TTFbox[1];
- $x2 = $text_origin_x + $min_x + $text_width;
- $y2 = $text_origin_y + $TTFbox[1] - $text_height;
- $x_TL = eregi('x', $fillextend) ? 0 : min($x1, $x2);
- $y_TL = eregi('y', $fillextend) ? 0 : min($y1, $y2);
- $x_BR = eregi('x', $fillextend) ? ImageSX($gdimg) : max($x1, $x2);
- $y_BR = eregi('y', $fillextend) ? ImageSY($gdimg) : max($y1, $y2);
- //while ($y_BR > ImageSY($gdimg)) {
- // $y_TL--;
- // $y_BR--;
- // $text_origin_y--;
- //}
- ImageFilledRectangle($gdimg, $x_TL, $y_TL, $x_BR, $y_BR, $text_color_background);
- ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
-
- }
- return true;
-
- } else {
-
- $size = min(5, max(1, $size));
- $this->DebugMessage('Using built-in font (size='.$size.') for text watermark'.($ttffont ? ' because $ttffont !is_readable('.$ttffont.')' : ''), __FILE__, __LINE__);
-
- $text_width = 0;
- $text_height = 0;
- foreach ($textlines as $dummy => $line) {
- $text_width = max($text_width, ImageFontWidth($size) * strlen($line));
- $text_height += ImageFontHeight($size);
- }
- if ($img_watermark = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
- ImageAlphaBlending($img_watermark, false);
- if (phpthumb_functions::IsHexColor($bg_color)) {
- $text_background_alpha = round(127 * ((100 - min(max(0, $bg_opacity), 100)) / 100));
- $text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, $bg_color, false, $text_background_alpha);
- } else {
- $text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, 'FFFFFF', false, 127);
- }
- ImageFilledRectangle($img_watermark, 0, 0, ImageSX($img_watermark), ImageSY($img_watermark), $text_color_background);
-
- if ($angle && function_exists('ImageRotate')) {
- // using $img_watermark_mask is pointless if ImageRotate function isn't available
- if ($img_watermark_mask = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
- $mask_color_background = ImageColorAllocate($img_watermark_mask, 0, 0, 0);
- ImageAlphaBlending($img_watermark_mask, false);
- ImageFilledRectangle($img_watermark_mask, 0, 0, ImageSX($img_watermark_mask), ImageSY($img_watermark_mask), $mask_color_background);
- $mask_color_watermark = ImageColorAllocate($img_watermark_mask, 255, 255, 255);
- }
- }
-
- $text_color_watermark = phpthumb_functions::ImageHexColorAllocate($img_watermark, $hex_color);
- foreach ($textlines as $key => $line) {
- switch ($alignment) {
- case 'C':
- case 'T':
- case 'B':
- $x_offset = round(($text_width - (ImageFontWidth($size) * strlen($line))) / 2);
- break;
-
- case 'L':
- case 'TL':
- case 'BL':
- $x_offset = 0;
- break;
-
- case 'R':
- case 'TR':
- case 'BR':
- default:
- $x_offset = $text_width - (ImageFontWidth($size) * strlen($line));
- break;
- }
- ImageString($img_watermark, $size, $x_offset, $key * ImageFontHeight($size), $line, $text_color_watermark);
- if ($angle && $img_watermark_mask) {
- ImageString($img_watermark_mask, $size, $x_offset, $key * ImageFontHeight($size), $text, $mask_color_watermark);
- }
- }
- if ($angle && $img_watermark_mask) {
- $img_watermark = ImageRotate($img_watermark, $angle, $text_color_background);
- $img_watermark_mask = ImageRotate($img_watermark_mask, $angle, $mask_color_background);
- phpthumb_filters::ApplyMask($img_watermark_mask, $img_watermark);
- }
- phpthumb_filters::WatermarkOverlay($gdimg, $img_watermark, $alignment, $opacity, $margin);
- ImageDestroy($img_watermark);
- return true;
- }
-
- }
- return false;
- }
-
-
- function WatermarkOverlay(&$gdimg_dest, &$img_watermark, $alignment='*', $opacity=50, $margin=5) {
- if (is_resource($gdimg_dest) && is_resource($img_watermark)) {
- $watermark_source_x = 0;
- $watermark_source_y = 0;
- $img_source_width = ImageSX($gdimg_dest);
- $img_source_height = ImageSY($gdimg_dest);
- $watermark_source_width = ImageSX($img_watermark);
- $watermark_source_height = ImageSY($img_watermark);
- $watermark_opacity_percent = max(0, min(100, $opacity));
- if ($margin < 1) {
- $watermark_margin_percent = 1 - $margin;
- } else {
- $watermark_margin_percent = (100 - max(0, min(100, $margin))) / 100;
- }
- $watermark_margin_x = round((1 - $watermark_margin_percent) * $img_source_width);
- $watermark_margin_y = round((1 - $watermark_margin_percent) * $img_source_height);
- switch ($alignment) {
- case '*':
- if ($gdimg_tiledwatermark = phpthumb_functions::ImageCreateFunction($img_source_width, $img_source_height)) {
-
- ImageAlphaBlending($gdimg_tiledwatermark, false);
- ImageSaveAlpha($gdimg_tiledwatermark, true);
- $text_color_transparent = phpthumb_functions::ImageColorAllocateAlphaSafe($gdimg_tiledwatermark, 255, 0, 255, 127);
- ImageFill($gdimg_tiledwatermark, 0, 0, $text_color_transparent);
-
- // set the tiled image transparent color to whatever the untiled image transparency index is
-// ImageColorTransparent($gdimg_tiledwatermark, ImageColorTransparent($img_watermark));
-
- // a "cleaner" way of doing it, but can't handle the margin feature :(
-// ImageSetTile($gdimg_tiledwatermark, $img_watermark);
-// ImageFill($gdimg_tiledwatermark, 0, 0, IMG_COLOR_TILED);
-// break;
-
-// ImageFill($gdimg_tiledwatermark, 0, 0, ImageColorTransparent($gdimg_tiledwatermark));
- // tile the image as many times as can fit
- for ($x = $watermark_margin_x; $x < ($img_source_width + $watermark_source_width); $x += round($watermark_source_width + ((1 - $watermark_margin_percent) * $img_source_width))) {
- for ($y = $watermark_margin_y; $y < ($img_source_height + $watermark_source_height); $y += round($watermark_source_height + ((1 - $watermark_margin_percent) * $img_source_height))) {
- ImageCopy(
- $gdimg_tiledwatermark,
- $img_watermark,
- $x,
- $y,
- 0,
- 0,
- min($watermark_source_width, $img_source_width - $x - ((1 - $watermark_margin_percent) * $img_source_width)),
- min($watermark_source_height, $img_source_height - $y - ((1 - $watermark_margin_percent) * $img_source_height))
- );
- }
- }
-
- $watermark_source_width = ImageSX($gdimg_tiledwatermark);
- $watermark_source_height = ImageSY($gdimg_tiledwatermark);
- $watermark_destination_x = 0;
- $watermark_destination_y = 0;
-
- ImageDestroy($img_watermark);
- $img_watermark = $gdimg_tiledwatermark;
- }
- break;
-
- case 'T':
- $watermark_destination_x = round((($img_source_width / 2) - ($watermark_source_width / 2)) + $watermark_margin_x);
- $watermark_destination_y = $watermark_margin_y;
- break;
-
- case 'B':
- $watermark_destination_x = round((($img_source_width / 2) - ($watermark_source_width / 2)) + $watermark_margin_x);
- $watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
- break;
-
- case 'L':
- $watermark_destination_x = $watermark_margin_x;
- $watermark_destination_y = round((($img_source_height / 2) - ($watermark_source_height / 2)) + $watermark_margin_y);
- break;
-
- case 'R':
- $watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
- $watermark_destination_y = round((($img_source_height / 2) - ($watermark_source_height / 2)) + $watermark_margin_y);
- break;
-
- case 'C':
- $watermark_destination_x = round(($img_source_width / 2) - ($watermark_source_width / 2));
- $watermark_destination_y = round(($img_source_height / 2) - ($watermark_source_height / 2));
- break;
-
- case 'TL':
- $watermark_destination_x = $watermark_margin_x;
- $watermark_destination_y = $watermark_margin_y;
- break;
-
- case 'TR':
- $watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
- $watermark_destination_y = $watermark_margin_y;
- break;
-
- case 'BL':
- $watermark_destination_x = $watermark_margin_x;
- $watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
- break;
-
- case 'BR':
- default:
- $watermark_destination_x = round(($img_source_width - $watermark_source_width) * $watermark_margin_percent);
- $watermark_destination_y = round(($img_source_height - $watermark_source_height) * $watermark_margin_percent);
- break;
- }
- ImageAlphaBlending($gdimg_dest, false);
- ImageSaveAlpha($gdimg_dest, true);
- ImageSaveAlpha($img_watermark, true);
- phpthumb_functions::ImageCopyRespectAlpha($gdimg_dest, $img_watermark, $watermark_destination_x, $watermark_destination_y, 0, 0, $watermark_source_width, $watermark_source_height, $watermark_opacity_percent);
-
- return true;
- }
- return false;
- }
-
-
- function DebugMessage($message, $file='', $line='') {
- if (is_object($this->phpThumbObject)) {
- return $this->phpThumbObject->DebugMessage($message, $file, $line);
- }
- return false;
- }
-}
-
-?>
\ No newline at end of file
projects / atutor.git / blobdiff